Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Millions	Jan. 31, 2023	Jul. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 508	$ 549
Other current liabilities	86	84
Operating lease liabilities	514	542
Total operating lease liabilities	$ 600	$ 626
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Liabilities, Current